private void button1_Click(object sender, EventArgs e) { //check the integry if (String.IsNullOrWhiteSpace(textBox1.Text.Trim())) { MessageBox.Show("Please input the name"); textBox1.Focus(); return; } if (String.IsNullOrWhiteSpace(maskedTextBox1.Text.Trim())) { MessageBox.Show("Please input the password"); maskedTextBox1.Focus(); return; } if (accountMgr.IsNameExist(textBox1.Text.Trim())) { MessageBox.Show(string.Format("The name:{0} already exists!"), textBox1.Text.Trim()); textBox1.Focus(); return; } //Check password is same if (maskedTextBox1.Text.Trim() != maskedTextBox2.Text.Trim()) { MessageBox.Show("The Passwords do not match!"); maskedTextBox1.Focus(); return; } if (GetJobIdFromJobName(comboBox1.Text) == (int)JobDescription.Admin) { MessageBox.Show("You can not add an Admin."); comboBox1.Focus(); return; } Save(); this.Close(); }